linuxhoster

Hi, I managed to configure Postfix receive mail from the outside world and it will send to local users on that machine, but i cannot seem to send mail to external emails such as my ISP account. I have tryed setting up my ISP's SMTP server as a gateway, but that did not work and I have tryed setting it to deliver directly. I find this really strange as no messages sit in the queue and they never get bounce or anything... they seem to dissappear into fresh air! Hope You Can Help Paul